81151840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{941}}^1$

素因数の和:981

約数の個数: 144

約数和(自身を含む): 243555984

約数和(自身を除く): 162404144

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 160, 176, 196, 220, 224, 245, 280, 308, 352, 385, 392, 440, 490, 539, 560, 616, 770, 784, 880, 941, 980, 1078, 1120, 1232, 1540, 1568, 1760, 1882, 1960, 2156, 2464, 2695, 3080, 3764, 3920, 4312, 4705, 5390, 6160, 6587, 7528, 7840, 8624, 9410, 10351, 10780, 12320, 13174, 15056, 17248, 18820, 20702, 21560, 26348, 30112, 32935, 37640, 41404, 43120, 46109, 51755, 52696, 65870, 72457, 75280, 82808, 86240, 92218, 103510, 105392, 131740, 144914, 150560, 165616, 184436, 207020, 210784, 230545, 263480, 289828, 331232, 362285, 368872, 414040, 461090, 507199, 526960, 579656, 724570, 737744, 828080, 922180, 1014398, 1053920, 1159312, 1449140, 1475488, 1656160, 1844360, 2028796, 2318624, 2535995, 2898280, 3688720, 4057592, 5071990, 5796560, 7377440, 8115184, 10143980, 11593120, 16230368, 20287960, 40575920, 81151840]

約数ペア:

[(1, 81151840), (2, 40575920), (4, 20287960), (5, 16230368), (7, 11593120), (8, 10143980), (10, 8115184), (11, 7377440), (14, 5796560), (16, 5071990), (20, 4057592), (22, 3688720), (28, 2898280), (32, 2535995), (35, 2318624), (40, 2028796), (44, 1844360), (49, 1656160), (55, 1475488), (56, 1449140), (70, 1159312), (77, 1053920), (80, 1014398), (88, 922180), (98, 828080), (110, 737744), (112, 724570), (140, 579656), (154, 526960), (160, 507199), (176, 461090), (196, 414040), (220, 368872), (224, 362285), (245, 331232), (280, 289828), (308, 263480), (352, 230545), (385, 210784), (392, 207020), (440, 184436), (490, 165616), (539, 150560), (560, 144914), (616, 131740), (770, 105392), (784, 103510), (880, 92218), (941, 86240), (980, 82808), (1078, 75280), (1120, 72457), (1232, 65870), (1540, 52696), (1568, 51755), (1760, 46109), (1882, 43120), (1960, 41404), (2156, 37640), (2464, 32935), (2695, 30112), (3080, 26348), (3764, 21560), (3920, 20702), (4312, 18820), (4705, 17248), (5390, 15056), (6160, 13174), (6587, 12320), (7528, 10780), (7840, 10351), (8624, 9410)]